I have a problem. My company has an internal Exchange 2003 Server, running on Windows 2003 SBS. This Exchange Server downloads mail from our webhost, and therefore does not directly receive mail for our domain. All mail forwarded to my email address first goes to our webhost, then our Exchange Server get is from there and distributes it accordingly.
I need to get remote access to my mail by the most secure means possible. We have a current network administrator that is paranoid about publishing internal resources onto the web, yet we NEED to get our mail remotely.
I have done ALOT of reading on this topic, and have decided to use MS ISA Server and Outlook Web Access (OWA) to facilitate access to the internal mail. That way, we will be able to log on from anywhere with an internet connection, and view our existing archive of mail.
This poses several problems (and questions) however.
Internet Connection - our internet connection is a home user ADSL type plan, with a dynamic IP address. The DSL line comes into our building and plugs straight into a 4 port DSL modem/router. Our server is then run off the router, as well as all our client machines. We do not have any dedicated hardware firewall devices. We are solely relying on the NAT firewall that is in our router. We have no DNS name mapped to any internal resources, our webhost host all mail and web content.
What would be the best way to get remote access to our OWA Mail? I can currently type SERVERNAME\EXCHANGE into internet explorer and get the OWA successfully. Our next step is to SECURELY publish this to make it accessible to the internet. Can anyone please give me an idea on wha the best way would be to configure ISA Server to allow secure remote access to the webmail?